The causes of the bacteria incipiency. The Helicobacter pylori bacterium is not able to progress in the open air. It is transferred through non-sexual contact: through utensils, personal hygiene facilities, and as well by a kiss. This microbe is resistant to an acidic environment, so it easily penetrates into the mucous membranes of the stomach and destroys its tissues. The tunica mucosa is inflamed, erosions and gastritis expand, and then ulcers are occurring. If the infection is not cured timely, there is a danger to get stomach cancer.